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2 years ago

Identify the proper form of the equilibrium-constant expression for the equation

Chemistry

1 answer:

GaryK [48]2 years ago

6 0

Pure solids, liquids and gases are excluded from the equilibrium expression.

<h3>What is equilibrium constant?</h3>

The term equilibrium constant has to do with the number that shows the extent to which reactants are being converted into products.

In the first reaction; NO2(g)+NO3(g)⇌N2O5(g), the low value of the equilibrium constant implies that the reaction tends towards the left hand side.

In the second reaction, the equilibrium expression is [HOCl]^2. Note that pure solids, liquids and gases are excluded from the equilibrium expression.

Learn more about equilibrium constant:brainly.com/question/10038290

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The solubility of oxygen gas in water at 40 ∘c is 1.0 mmol/l of solution. What is this concentration in units of mole fraction?

juin [17]

The formula for mole fraction is:

$mole fraction of solute = \frac{number of moles of solute}{total number of moles of solution}$ -(1)

The solubility of oxygen gas = 1.0 mmol/L (given)

1.0 mmol/L means 1.0 mmol are present in 1 L.

Converting mmol to mol:

$1.00 mmol\times \frac{1 mol}{1000 mmol} = 0.001 mol$

So, moles of oxygen = 0.001 mol

For moles of water:

1 L of water = 1000 mL of water

Since, the density of water is 1.0 g/mL.

$Density = \frac{mass}{volume}$

$Mass = 1.0 g/ml\times 1000 mL = 1000 g$

So, the mass of water is 1000 g.

Molar mass of water = 18 g/mol.

Number of moles of water = $\frac{1000 g}{18 g/mol} = 55.55 mol$

Substituting the values in formula (1):

$mole fraction = \frac{0.001}{55.55+0.001}$

$mole fraction = 1.8\times 10^{-5}$

Hence, the mole fraction is $1.8\times 10^{-5}$ .

7 0

3 years ago

Ann and Jesse's mom is driving them to school. They are listening to music on an FM radio station. When they ride in the car wit

Svet_ta [14]

Answer: it they are both in the same place

Explanation:I don’t know and don’t care loser

3 0

3 years ago

How you could adjust the settings of the simulation to increase the number of red (H3O+) and blue (A-) particles in the solution

Slav-nsk [51]

Answer:

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3 years ago

Help please! What is the mass of the iron (Fe) involved in this reaction? Identify the following equations as balanced or unbala

eimsori [14]

<h2>Question 1:</h2><h3>32g + <u><em>56g</em></u> --> 88g</h3>

This one's just a simple math problem. Do 88 - 32, which is 56. You can also find the same answer by looking for the atomic mass of iron (Fe), which rounds up to 56.

<h2>Question 2:</h2><h3>This equation is <u><em>balanced</em></u>.</h3>

On the left side, there is 2 Nitrogen (because of the subscript), and 6 Hydrogen (3 x 2 = 6). On the right side, there is 2 Nitrogen (because of the coefficient), and 6 Hydrogen. (2 x 3 again) There are 2 Nitrogen and 6 Hydrogen on each side, therefore the equation is balanced.

<h2>Question 3:</h2><h3>This equation is <em><u>unbalanced.</u></em></h3>

On the left side, there are 2 Nitrogen (N) and 2 Hydrogen (H). On the right side, there is 1 Nitrogen and 6 Hydrogen. There are 2 Nitrogen and 2 Hydrogen on one side, while the other only has 1 Nitrogen and 6 Hydrogen. Therefore the equation is unbalanced.

<h2>Question 4:</h2><h3>This equation is <em><u>balanced.</u></em></h3>

On the left side, there are 2 Chromium (Cr) and 6 Chlorine (Cl). On the right side, there are 2 Chromium and 6 Chlorine. There are 2 Chromium and 6 Chlorine on each side, therefore the equation in balanced.

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If something is confusing or doesn't make any sense, feel free to let me know! ^^

6 0

4 years ago

A galvanic cell at a temperature of 42 degrees Celcius is powered by the following redox reaction:

seropon [69]

<u>Answer:</u> The cell voltage of the given reaction is 1.86 V

<u>Explanation:</u>

The given chemical equation follows:

$3Cu^{2+}(aq.)+2Al\rightarrow 2Al^{3+}(aq.)+2Au(s)$